Oil burner



Oct. 7, 1930.

7 w. R. KIEFER OIL BURNER Original Filed Nov. 18, 1926 MHHHHH val/w a9444.40,

A :J UiNI'TEb STATES V v Patented Oct. 7, 1930 I WILLIAM RAY xIErEIaoRRooKFoRnILLINo s, AssIqNoR 'ro THE SUNDSTKAND EN- G NEE ING- 00., orROCKFORD, ILLINoIs, A CORPORATION or IL JNoIs oIL BUR RR "':orig na ancauonffi ai nevember' 18, 1926; Serial 'Nofusma. *m i maanathis""anpllcation' filed t J'ulnefl,1928. serial No. 282,521.. 1

V The invention relates particularly to a spray nozzle Construction andmounting for oilburners of the typei-nwhich the combustible mixture issprayed into a combustion chamber. 5 I i 1 Thisapplication-is a divisionof myapplication Serial No. 149,042, filed November 18,1926, covering anoil burner; For a dis closure'of one form ofoil burner in which 1thenozzle construction herein shown may be used reference maybe had toapplication Serial No. 90,452, filed February 25, 1926, by Gustaf DavidSundstrand.*-

The primary object of the presentinventionis to provide a new andimproved oil' burner having a nozzle structure'and-mounb ing therefor'arranged to provide. an air jacket about the nozzle so as to prevent thel nozzle frombecoming excessivelyiheated and thereby avoid clogging: ofthe nozzle due to t the carbonizing of the oil therein. Other objectsandadvantages will become apparent fromithe. following description taken inconnection with the accompanying drawings in whichz" V i Figure 1 isaverticalsectionalview of an apparatus embodying the preferred form of Ithe invention,the view beingtaken approximately on the line 1- -1" 6fFig. I Fig. 2 isia detail front view of a plate or casting which isadapted to close the opening through which coal is ordinarily introducedinto the ordinary house-heating furnace.

The invention will beherein described as it is customarily applied to anordinary do niestic furnace originally 1 intended to burn coal'or other.solidfuel, but it will be understood that the invention is not limitedin all its aspects to'such use. 1 v i In the drawi gs the invention isembodied in 'nieans adapted tospray a combustible mixture of oil and airinto a combustion chamber (not shown), said spraying'means comprisinganozzle whichis supported just inside the furnace by meansof arectangular plate. or" casting which is substituted i for the door thatnormally closes the openingthrough' whichicoa-l. is introduced into thefurnace. The plate or casting referred to is shownfin 'Fig'; .2 and isdesignated 1. It

is rigidly secured in position by means of bolts extending throughopenings 2. In said ATENroFi-"i g plateis an inspection opening 3 whichis normally closed by hinged door' (not shown). I

The nozz V having-a bore 6, the lower portion o fithebore being enlargedto form a ehamber 7. ,To

the lower portion ofjthebody 5 iss'eeured a.

nozzle or funnel 8 which, has a scr ewof the walls of thechamber 'lf.In" the inthread engagement with the "lower [portion '1 ner end of thefunnel Slisfa discharge orispond with the interior taper ofthe nozzle 8.The screw 10 is adjusted so asto leave an annular space betweenltheconical end of the screw andthe nozzle 8. An axial duct 11 extends fromoneend to the other of the screw 10. The upperend ofthe bore 6'isnormallyclosed means of a screwplug 12, which plugmay be removed when itis desirable to adjust the screw10 orclean'out theparts.

Fuel oil under pressure: supplied through a tube 13 which is connectedto the body 5 at'let and communicates with a pas sage 15 which.communicates with the bore 6 at a point between the adjusting screw 10and the screwplu'g 12;

Compressedair'is suppliedthrough a 16 which is connected to the body5fat17. and communicates with a passage ldthat extends v It will be seenthat (511" suppliedthroughf its lower wall'19 -of the chamber-19. Thebody.

5 is supported within the chamber 19 by means of the funnel 8 whichengages the sides of. the opening 20 and by an adjusting screw 21 "onwlrich'the outer end of "the body rests;

fuel will be so discharged at the proper-angle,

vthe body '5 issimply drawn back fa r enough to allowit to fulcrum onsome portion of the walls o fthe opening 20. It willbe understood thatthere neednot be a tight fit at all points between the nozzle and thewallsofjtheopening 20. After the bodyh has been set in .position' todirect the sprayto the proper point in thecombustion chaniber (notshown), the 5 is secured in such position by means offa set screwextending through alweb 2 3 which formsa forwa-rdjextension of the. sidewalls 19 of the chamber 19. The

tubes '13 and I6 are sufficiently flexible to permit oflthe describedadjustment of the nozzle structure 5. i Y .;:A sshoivh in'FigQ 1, thenozzle body 5 does not completely fill the chamber 19, there-being aspace; below, behind and above I the nozzle body so as to permitair toflowby convection from the lower portion of the-chamber 19 up and outthrough the upper portion thereof. The. flow of air thus obtainedvserves "to pro tect the nozzle structure from" Itheintense heat withinthe combustion cham'ben In the form herein illustrated, an electricspark ignition means is shown which has a pair er spark termina ls26positioned aldjacent the path of a spray of fuel fromv the nozzle 8."v

Further description of the ignition device, is not deemed tobe necessarysinceit is describedin detail and claimed in my'copend ing applicationSerial No. 149,042 filed No vember 18, 1926. V v

' From the foregoing description it will be apparent that the inventionpr'ovides astruc ture which will serve effectively to increase theefficiency of the oil burner since the pro vision of the air jacketaboutthenozzle S will prevent'thenozzle from becoming excessively heated'and will ,prevent cloggihg of the nozzle which would ordinarily becaused by such excessive heat, V

It will/also be apparent that theinvention provides a fuel nozzlemounting wherein the fuel nozzle isJ-rea'di ly -accessible ,forad-justment or cleaning-from the outside of the p I claim as my invention:

1 In an oil burner, a plate adapted to close the fuel opening of afurnace, a chamber on the inner side of said plate, the forward side ofsaid chamber being open, a nozzle structure within said chamber andcomprising a nozzle projecting through an opening in the lower portionof said chamber, said nozzle structure being accessible for adjustmentor cleaning from the-outer side of said plate, an adjustable supportcarriedby the plate for the outer portion of the nozzle structure"whereby the nozzle structure may be tilted to proper angle, saidinozzlelserving asa fulv I crum in such adjustment, and means" for se Inad usting the body 5 so thattlie spray of" curing the nozzle structuretion in said chamber. I Q I'n an oil bu-rner,}a plate adapted to closethe *fuel opening of. a furnace, a-chamber on the inner side ofsaid'plate, a nozzle structure within said chamber and comprising anozzle projecting through an opening in the lower portion of saidchamber, an adjustable support, carried by the plate for the outerportionof thewnozzle structure whereby the nozzle structure be tilted toproper angle, said nozzle serving :as ,arfulcrum in such adjustment, andmeans 'for securing the nozzle structure in adjusted :position in saidchamber." a f 3. Ina-n oil burner,;a plate adapted to close the fuelopening ofa .f-u-rnace, a chamber on the innerYSide-of said plate, theforward side 0f :V- Li'd vchai mber ,abein-g .open, a nozzle StIllCfture within said chamber and comprising a nozzle projecting through anopening in said chamber, an adjustable support carried by the .plate:for the outer portion :of the nozzle strHcturewherby the nozzlestructure may be-tiltedrtoproper angle,sa1id nozzle serving as a fulcrumin for *securing 'the'no'zzle structure in adjusted position in saidcha'mber. v

4..aan10il'burner, 'axplate adapted to close the fuel opening ofa'furnace, a chamber on the -inner side of said :plate, the forward:side of'saidschamber beingropen on the outer side ofsaid-iplate, twowebs forming forward extensions =of the side walls of saidrchamber, anozzle strudturewithin said chamber and betWGeTI'SEUld webs,said'stnucture comprising a nozzle projecting through an opening in thein adjusted posilower portion of said chamber, said nozzle suchadjustment, and means lap

